Figure 10 shows the behaviour of a set of simulated objects when the zphot, computed from UBVRI photometry, is compared to the true z (model). BVRI filter responses are similar to Focam, and U is a ``red'' Johnson (c ~ 3750 Å). As expected, the errors on individual galaxies (at 90% confidence level) become huge at ~1.2 z ~2.2 because of the lack of strong spectral features in the visible band. This problem is solved when near-IR photometry is included.